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Three Angles of a Quadrilateral Are Equal. If the Fourth Angle is 69°; Find the Measure of Equal Angles. - Mathematics

Sum

Three angles of a quadrilateral are equal. If the fourth angle is 69°; find the measure of equal angles.

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Solution

Let each equal angle be x°

x + x + x + 69° = 360°

3x = 360°- 69

3x = 291

x = 97°

Each, equal angle = 97°

Concept: Concept of Quadrilaterals - Sides, Adjacent Sides, Opposite Sides, Angle, Adjacent Angles and Opposite Angles
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Chapter 16: Understanding Shapes - Exercise 16 (C) [Page 187]
Q 9
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APPEARS IN

Selina Concise Mathematics Class 8 ICSE
Chapter 16 Understanding Shapes
Exercise 16 (C) | Q 9 | Page 187
Selina Class 6 Mathematics
Chapter 27 Quadrilateral
Exercise 27 (A) | Q 9
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